Lantana 'Buttercup' has become a winter houseplant for me. Last year I rooted a cutting to winter over; this year I brought in a small plant from one of those cuttings that had spent the summer outside. It does very well indoors, recovering quickly from being pinched back to keep it bushy, and just as quickly covering itself again with blooms. It is one of the most cheerful winter plants we have!
Would never have thought to keep one overwintered inside. I will take some cuttings this week and see what happens between now and next Spring. Thank you for posting the comment.